If you are new to Twitter or just want to maximize your Twitter efforts to promote your business, you can find a sea of info on the Internet to help you.  It can be a daunting task finding the good stuff so I thought I would share the blogs and info that I particularly like on the subject.

TwiTip: http://www.twitip.com/

Twitter Handbook Blog: http://twitterhandbook.com/blog/

Twitter Handbook: http://twitterhandbook.com/

Blog of Mr. Tweet: http://blog.mrtweet.net/

Several free e-books on using Twitter for business:
http://www.ariwriter.com/2008/12/8-free-ebooks-on-twitter/

Have fun!